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Heat — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSHeat1 Mark
Question
Define the following term:
Coefficient of superficial expansion
✓

Answer

The coefficient of superficial expansion is equal to the change in the area of a rod of area $1m^2$​​​​​​​ when its temperature rises by $1^\circ c.$

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